​Learn how to use the `after_mu_upgrade` WordPress filter to execute custom functions after a Multisite database upgrade in this informative article.

The 'invited_user_email' PHP filter in WordPress allows developers to modify the email address used when inviting new users to a site. This can be useful for customizing the email address…

The 'lostpassword_user_data' PHP filter in WordPress allows developers to modify user data during the password reset process. This can be useful for customizing the reset email or adding additional security…

The 'pre_delete_attachment' PHP filter in WordPress allows developers to modify or prevent the deletion of attachments before it happens. This can be useful for implementing custom logic or adding additional…

The 'pre_handle_404' PHP filter in WordPress allows developers to customize the 404 error page. This filter can be used to redirect users to a different page or display a custom…

The 'network_admin_email_change_email' PHP filter in WordPress allows for easy customization of the email address used for network-wide administrative notifications. By utilizing this filter, developers can ensure that important messages are…

The 'pre_untrash_post' PHP filter in WordPress allows developers to modify the behavior of the post untrashing process. This filter can be used to perform custom actions before a post is…

The 'pre_wp_mail' PHP filter in WordPress allows developers to modify email content before it is sent. This can be useful for adding custom headers or filtering out sensitive information.

The pre_wp_update_https_detection_errors PHP filter in WordPress allows developers to modify the error messages displayed when HTTPS detection fails. This can be useful for customizing error messages or handling errors in…